Disable rendering when suspending on chrome os

ash/system/chromeos/power/power_event_observer.h

Index: ash/system/chromeos/power/power_event_observer.h
diff --git a/ash/system/chromeos/power/power_event_observer.h b/ash/system/chromeos/power/power_event_observer.h
index 941e234edd938db53e5fe6c8832c67c4f896e53b..6650d2c27f1ec1bc745311049208b4c16eb0f607 100644
--- a/ash/system/chromeos/power/power_event_observer.h
+++ b/ash/system/chromeos/power/power_event_observer.h
@@ -40,6 +40,14 @@ class ASH_EXPORT PowerEventObserver
   base::Closure screen_lock_callback_;
 
  private:
+  // Tells the compositor for each of the displays to resume sending rendering
+  // requests to the GPU.
+  void ResumeRenderingRequests();
+
+  // Tells the compositor for each of the displays to finish all pending
+  // rendering requests and block any new ones.
+  void StopRenderingRequests();

[Daniel Erat, 2015/02/11 14:11:42]

nit: switch the order of these two methods to mirror the calling pattern

+
   DISALLOW_COPY_AND_ASSIGN(PowerEventObserver);
 };